Antisiphon transfer valve



Sept. 5, 1961 l. A. WARD ANTISIPHON TRANSFER VALVE Filed Dec. 17, 1956 FIG. 2

UTFOQNEYS INVENTOR. /V//VG A (048W I r H l 1 I 4 x M I M 5 IL 2,998,824 ANTISIPHON TRANSFER VALVE Irving A. Ward, Los Angeles, Calif., assignor to Modern Faucet Mfg. Co., 'Los Angeles, Calif., a corporation of I California Filed Dec. '17, 1956,, Ser. No. 628,730 6 Claims. (Cl. 137-119) Thisinvention relates to an improved transfer valve d more particularly a valve adapted to be placed beem a water inlet and a pair of outlets which will direct flow normally through one of said outlets until the other outlet is opened at which time all discharge is through the latter mentioned outlet. It is an object of this invention to provide a transfe valve which will accommodate a stem passing therethrou-gh such as a stem of a single lever faucet.

Itis still a further object of this invention to provide a transfer valve of this type which is antisiphon in character.

It is still a further object of this invention to provide such a device which is easily and rapidly assembled and inexpensive to manufacture without detracting from its dependability. and longevity."

Other objects and advantages will be readily apparent mm the following description:

In the drawingsz", FIGUREQl'is a side elevation in section of a device embodying this invention in the shutofi position.

FIGUREZ is a fragmentary view similar to FIGURE 1 illustrating flow to the spout outlet.

. FIGURE 3yis'. a iew taken along line 3-3 of FIG- URE l. i

FIGURE 4 is fragmentary section illus tratin-g flow to the spray outlet.

FIGURE} is a view similar to FIGURE 4 illustrating flow to the spout outlet.

FIGURE 6 is a view similar to FIGURE 4 illustrating the reinforcing of the valve-elementr FlGURE l-is-.side. .elevation partially in section of thevalve mechanism. e I :8 is a fragmentary view' of the cage. Z

A valve body 10 is supported in a casing 12 and pipe 14 and 16 convey hot and cold water through the easing into the valve body. A rotary plug valve 18 is supported upon stem 20 and has a slot 22 therein adapted upon rotation of stem 20 to register with one or more of the pipes 1-4 and 16 to admit water which flows upwardly towards the open top of casing 12.

The upper extremity of casing 12 telescopically receives the lower extremity of the transfer valve body support member 24. The upper extremity of valve body 10 forms a shoulder upon which washer 25 is seated and the under edge of support member 24 is notched to receive --ring 26 forming a watertight seal at this union.

The stem 20 has an enlarged head 28 thereon while the support member 24 has a tapered restriction adjacent the head. An O-ring 30 is seated in this restriction adapted to engage head 28 and thereby shut off flow upwardly through member 24 when the valve stem is raised. Thus raising and lowering valve stem 20 by an appropriate hand-1e varies the volume of water while rotation of same varies the mixture of hot and cold water.

A cap 32' screws into the upper extremity of support member 24 and has a chamber 34 formed therein having a plurality of transversely extending discharge ports 36. Stem 20 projects through chamber 34 and carries a plug 38 which screws into cap 32 while packing 40 forms a watertight seal at the top of chamber 34.

Surrounding the chamber 34 is the spout outlet formed of a spout 42 and an annulus 44 which slips partially United States Patent 0 down over the support member 24 resting on ported web 46 on the suppontmember. The hand spray outlet 48 has an enlarged extremity which permits passage of pipes 14 and 1-6 therethrough and further encompasses the plug valve body 10. Its upper extremity bears against web 46 and a retaining member 50 screws thereon which.

has an annular slot 52 formed therein to receive O-ring 54, providing a watertight seal between spout annulus 44 and web 46. A packing element 56 forms a seal between'the enlarged extremity of the spray outlet and retaining member 50.

Thus, a single water inlet is provided from chamber 34 to chamber 58 surrounding same while a pair of outlets either to spout or spray are provided for chamber 58. This invention is particularly directed to the mechanism for controlling flow to one or the other of the outlets.

Surrounding the lower extremity of cap 32 is a resilient check valve element 60 which has a thin flexible flap 62 depending therefrom which covers ports 36 preventing back siphonage therethrough. The inner surface of flap 62 has a plurality of beads 63 thereon which reinforces same.

When water flows through either outlet the flap flexes to permit flow through ports 36 into chamber 58. Surrounding the upper portion of valve element is a metallic washer 64 having a shoulder 66 formed thereon and a metal ring 68 supported by washer 64 at its uppermost extremity forming a second shoulder spaced from shoulder 66. The spaced shoulders tor-m limits for movement of a cage-like member 70. Member 70 has at its upper extremity an inturned flange 72 which falls be. tween shoulder 66 and ring 68. The flange 72.has a plurality of notches 74 cut therein so that flow will not be. terminated upon engagementof flange 72 and ring 68.

'The lower portion of member 70 projects into chamber 58 and the lower extremity is bent to form a piston 75 at the lower ,edge' ofthe cage. The piston is of slightly smaller diameter than chamber 58, to. move in response to the pressure in the chamber but not to cut off flow therethrough. Also the piston is slotted'to'receive packing, element .76, I providing a watertight seal between the piston and the outer wall'of chamber 58;

The check valve element 60 has a flange or bead 77 formed thereon which projects into chamber 58 and flexes in accordance with flow through said chamber,

and its outer diameter is sufficiently large to cover notches 74 in flange 72 of member 70 as shown in FIG. 4.

'In operation, the normal position of the elements is shown in FIGURES 1 and 6 where the flow of water is shut off, flap 62 covering ports 36 preventing back siphon to the water supply. When the plug valve 18 has been rotated and lowered to admit water, the parts assume the position illustrated in FIGURES 2 and 5 when the spray outlet is closed and discharge is through the spout outlet 42. The flap 62 is flexed admitting water to chamber 58. Since the spray outlet is closed, water pressure on flange 72 raises the member 70 until same engages ring 68 with water flowing through notches 74 and out the spout.

When the spray outlet is opened and water flows therethrough, there is a reduced pressure below piston causing member 70 to be lowered until flange 72 engages shoulder 66. This condition is seen in FIGURE 4. The flange or head 77 flexes to cover the space between shoulder 66 and flange 72 blocking flow through notches 74 thereby preventing any discharge through spout 42 while the spray outlet is open preventing drip from the spout or a siphon through the spray.

While what hereinbefore has been described is the preferred embodiment of this invention, it is readily apparent that alterations and modifications can be resorted to without departing from the scope of this invention and such Patented Sept. 5, 1961 alterations and modifications are intended to be included within the scope of the appended claims.

I claim:

1. A transfer valve comprising: fixed means forming an annular chamber having two outlets and one inlet, a resilient check valve surrounding said inlet, said check valve closing said inlet in its relaxed state and being resiliently opened by flow from said inlet, a cage-like member movable in said chamber, an annular piston on said member movable in response to pressure in said chamber, and a flexible element on said check valve adapted to fiex and close ofi flow to one of said outlets upon movement of said member in said chamber in response to flow through the other of said outlets.

2. A transfer valve comprising: fixed means forming an annular chamber having two outlets, means forming a second chamber within said annular chamber, ports intercommunicating saidchambers, a resilient check valve in said first mentioned chamber covering said ports in its relaxed state and being resiliently opened by flow from said ports, a cage-like member movable in said" first mentioned chamber, an annular piston on said member movable in response to pressure in said first mentioned chamber, and a flexible element on said check valve adapted to flex and close off flow to one of said outlets in said first mentioned chamber upon movement of said member in said chamber in response to flow through the other of said outlets in said first mentioned chamber.

3. A transfer valve comprising: fixed means forming an annular chamber, means forming a ported inlet for said chamber, a pair of outlets from said chamber, 'a valve element supported on said inlet forming means, a flexible flap on said valve element covering said ported inlet, said flap closing said ported inlet in its relaxed state and being opened by flow therefrom, a cage-like member in said chamber, a piston on said member movable in response to pressure in said chamber, and a pair of opposed shoulders formed on said valve element, a portion of said member projecting between said shoulders and limiting moveinent of said member in said'chamber.

4. A transfer valve comprising: fixed means forming an annular chamber, means forming a ported inlet for said chamber, a pair of outlets from said chamber, a valve element supported on said inlet forming means, a flexible flap on said valve element covering'said ported inlet, said flap closing said ported inlet in its relaxed state and being said outlets.

4 opened by flow therefrom, a cage-like member in said chamber, a piston on said member movable in response to pressure in said chamber, a pair of opposed shoulders formed on said valve element, a flange on said member fitting between said shoulders limiting movement of said member in said chamber and notches in said flange permitting flow therethrough when contacting said shoulders.

5. A transfer valve comprising: fixed means forming an annular chamber, means forming a ported inlet for said chamber, a pair of outlets from said chamber, a valve element supported on said inlet forming means, a flexible flap on said valve element covering said ported inlet, said flap closing said ported inlet in its relaxed state and being opened by flow therefrom, a cage-like member in said chamber, a piston on said member movable in response to pressure in said chamber, a pair of opposed shoulders formed on said valve element, a portion of said member projecting between said shoulders and limiting movement of said member in said chamber, and a flexible portion on said valve element blocking flow between said shoulders and said member by flexing in response toflow through one of said outlets.

6. A transfer valve comprising: fixed means forming an annular chamber, means forming a ported inlet for said chamber, a pair of outlets from said chamber, a valve element supported on said inlet-forming means, a flexible flap on said valve element covering said portedinlet, said flap closing said ported inlet in'its relaxed state and being opened byflow therefrom, a cage-like member in said chamber, a piston on said membermovable in response to pressure in said chamber, a pair of opposed shoulders formed on said valve element; a flange on said member fitting between said shoulders limiting movement of said member insaid chamber, notches in said 'flange'permitting flow therethrough when contacting said shoulders and a flexible portion on said valve element blocking flow through said notches in response to flow through "one of References Cited in the file of this patent UNITED STATES PATENTS 

